Data Sheet S17546EJ2V0DS

19

μ PD8884A

9. Response difference between inside and outside : RDIO

Difference of average output voltage between inside 2400 dpi and outside 2400 dpi (refer to 3. Photo

response non-uniformity).

RDIO (%) =

2

⎪ x − y ⎪

x + y

× 100

10. Photocell array imbalance : PAI

PAI is calculated by following formula (refer to 3. Photo response non-uniformity).

PAIIN (%) =

2

n

j = 1

j = 1

n

2

(

x2j –1 – x2j)

1

n

n

x j

× 100

∑

∑

xj

n

: Output voltage of each pixel

: Number of valid pixels (21360 bits)

PAIOUT (%) =

2

m

j = 1

j = 1

m

2

(

y2j –1 – y2j)

1

n

m

y j

× 100

∑

∑

yj

m

: Output voltage of each pixel

: Number of valid pixels (21360 bits)

11. Offset level : VOS

DC level of output signal is defined as follows.

12. Reset feed-through noise : RFTN

Reset feed-through noise (RFTN) are defined as follows.

VOS

VOUT

RFTN